2,565 research outputs found
aDORe djatoka: An Open-Source Jpeg 2000 Image Server and Dissemination Service Framework
4th International Conference on Open RepositoriesThis presentation was part of the session : Conference PresentationsDate: 2009-05-19 03:00 PM – 04:30 PMThe JPEG 2000 image format has attracted considerable attention due to its rich feature set defined in a multi-part open ISO standard, and its potential use as a holy-grail preservation format providing both lossless compression and rich service format features. Until recently there was lack of an implementation agnostic (e.g., Kakadu, Aware, etc) API for JPEG 2000 compression and extraction, and an open-source service framework, upon which rich Web 2.0-style applications can be developed. Recently we engaged in the development of aDORe djatoka , an open-source JPEG 2000 image server and dissemination framework to help address some of these issues. The djatoka image server is geared towards Web 2.0 style reuse through URI-addressability of all image disseminations including regions, rotations, and format transformations. Djatoka also provides a JPEG 2000 compression / extraction API that serves as an abstraction layer from the underlying JPEG 2000 library (e.g., Kakadu, Aware, etc). The initial release has attracted considerable interest and is already being used in production environments, such as at the Biodiversity Heritage Library , who uses djatoka to serve more than eleven million images. This presentation introduces the aDORe djatoka image server and describes various interoperability approaches with existing repository systems. Djatoka was derived from a concrete need to introduce a solution to disseminate high-resolution images stored in an aDORe repository system. Djatoka is able to disseminate images that reside either in a repository environment or that are Web-accessible at arbitrary URIs. Since dynamic service requests pertaining to an identified resource (the entire JPEG 2000 image) are being made, the OpenURL Framework was selected to provide an extensible dissemination service framework. The OpenURL service layer simplifies development and provides exciting interoperability opportunities. The presentation will showcase the flexibility of this interface by introducing a mobile image collection viewer developed for the iPhone / iTouch platform
Improving Term Extraction with Terminological Resources
Studies of different term extractors on a corpus of the biomedical domain
revealed decreasing performances when applied to highly technical texts. The
difficulty or impossibility of customising them to new domains is an additional
limitation. In this paper, we propose to use external terminologies to
influence generic linguistic data in order to augment the quality of the
extraction. The tool we implemented exploits testified terms at different steps
of the process: chunking, parsing and extraction of term candidates.
Experiments reported here show that, using this method, more term candidates
can be acquired with a higher level of reliability. We further describe the
extraction process involving endogenous disambiguation implemented in the term
extractor YaTeA
Computer science is elementary: Comprehensive plan for computer science implementation at the elementary level
Teaching students computer science in the classroom can have many benefits. Several students in today\u27s education system will go into career fields that do not yet exist and the skills taught through computer science can prepare them for the future. This project outlines the steps for planning a computer science initiative at the elementary level. A literature review examining the effect of teaching computer science on student achievement at the elementary level is used to support an award proposal for funding a high quality computer science curriculum in a rural, underserved district. This project can serve as a model for other schools interested in pursuing a computer science curriculum. Action research could be pursued through this project that could benefit the field of computer science research. Further research is recommended on the effects of a computer science education at the elementary level
Emeritus Faculty and Alumni as Volunteers in a University Archives: Planning for Success
Archivists use volunteers to arrange and describe collections, help with events and donor relations, and assist with reference activities. Volunteers may also work on projects outside the archives, such as oral histories, fundraising, or designing and creating web pages. They are usually enthusiastic and eager to help, and they can be a valuable addition to the archives staff. Volunteers may range from children to retirees, from novices to professionals with archival experience. Regardless of their age or level of knowledge, volunteers require supervision, detailed instructions, and often much patience
AlignFlow: Cycle Consistent Learning from Multiple Domains via Normalizing Flows
Given datasets from multiple domains, a key challenge is to efficiently
exploit these data sources for modeling a target domain. Variants of this
problem have been studied in many contexts, such as cross-domain translation
and domain adaptation. We propose AlignFlow, a generative modeling framework
that models each domain via a normalizing flow. The use of normalizing flows
allows for a) flexibility in specifying learning objectives via adversarial
training, maximum likelihood estimation, or a hybrid of the two methods; and b)
learning and exact inference of a shared representation in the latent space of
the generative model. We derive a uniform set of conditions under which
AlignFlow is marginally-consistent for the different learning objectives.
Furthermore, we show that AlignFlow guarantees exact cycle consistency in
mapping datapoints from a source domain to target and back to the source
domain. Empirically, AlignFlow outperforms relevant baselines on image-to-image
translation and unsupervised domain adaptation and can be used to
simultaneously interpolate across the various domains using the learned
representation.Comment: AAAI 202
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